Question

Proving the max of a quadratic form ${\mathbf x}^T\mathbf A \mathbf x$ can be attained when $x$ is from $n$-dimensional hypercube

score 742 · Answer 1 · 2013-09-07 22:21:33

Proving the max of a quadratic form ${\mathbf x}^T\mathbf A \mathbf x$ can be attained when $x$ is from $n$-dimensional hypercube

score 1.8k · Answer 2 · 2013-09-08 13:30:38

1.8k

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54

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76

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List Question

Proving the max of a quadratic form ${\mathbf x}^T\mathbf A \mathbf x$ can be attained when $x$ is from $n$-dimensional hypercube

How can I find integer values for which a given expression gives a perfect square?

How high is a baseball after 5 seconds of being thrown off of a 175 foot building? And how many seconds does it take to hit the ground?

A problem about the discrete logarithm

Extremum of a multidimensional quadratic function

A problem about the quadratic form $x^TAx=0$.

Integer roots of $x^2+y^2 = 25$ and $x^3+y^4=145$

Quadratic Form $f\left(x_1,x_2,\cdots ,x_n\right)=\sum _{i=1}^m \left(a_{i 1}x_1+\cdots +a_{i n}x_n\right)^2$

Get x and y in quadrat equations system

Real world examples of quadratic and/or finding roots of a quadratic?

Witt index and Pfister neighbours

About quadratic form and its discriminant

Multivariable local maximum proof

Standardize a Quadratic Form

Prove: matrix of the quadratic form is adj(A)

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